Ore-concentrating table.



PATENTED DEG. 11, 190e. F. W. SHERMAN. ORB GONGENTRATING TABLE.

APPLICATION FILED APR.20, 1905.

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PATENTED DEG, 11, 1906.

F. W. SHERMAN. ORE CNCENTRATING TABLE. APPLICATION FILED APL-20,1905.

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FQ MANN Gymline, w W5@ PATENTED DEC. ll, 1906.

F. W. SHERMAN.

ORB GONUENTRATING TABLE.

APPLICATION FILED APR.20.1905.

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FREDERIC WOOSTER SHERMAN, OF PARK CITY, UTAH.

ORE-CONCENTRATING. TABLE.

Specification of Letters Patent.

'Patented nec. 1 1, 1906.

Application filed April 20, 1905. Serial No. 255.521.

To all whom, it may concern."

Be it known that I, FREDERIC VVoosTER SHERMAN, a citizen of theUnitedStates, residing at Park City, in the county of Summit and State ofUtah, have invented certain new and useful Tmprovements inOre-Concentrating Tables, of which the following is a specification.

My present invention pertains to improvements in ore-concentratingtables, the construction and advantages of which will be hereinafter setforth, reference being had to the annexed drawings, wherein- Figure 1 isa top plan view of the table Fig. 2, a transverse vertical sectionalview on the line 2 2 of Fig. l 3 Fig. 3, a similar view, the parts beingshownfin a different relation and portions of the apparatus beingomitted; Fig. 4 a perspective view of a portion of one of the panels ortrays; Fig. 5, a similar view of'one of the guide-rails; Fig. 6, atransverse vertical sectional viewon the line 6 6 of Fig. 1;' Fig. 7,"aside elevation of the apparatus, parts being shown in section, on theline 7 7 of Fig. 6, and the spraying device being likewise shown inpart; Fig. 8,a longitudinal sectional view of one of the bumpers, takenonV the line S 8 of Fig. l; Fig. 9, a top plan view of the supportingframe or bed, and Fig. l0 a vertical sectional view-of a portion thereofon the line 10 l0 of Fig. 9.

The main object of my invention is to construct a concentrating-tablesuitable for vand capable of separating or concentrating fine ores andalso slimes.

The machine hereinafter described is capable of saving the first pulp aswell as the tailings 3 and theinvention has for its further object theprovision of means whereby this may be accomplished.

lThe apparatus may be described in general terms as comprising a seriesof light trays or panels mounted and movable upon a' suitable support,means for advancing the trays along said support, and means acting uponthe trays which first receive the pulp to impart to them aseries of jarsor impacts as they are moved longitudinally back and forth across thesupport.

The apparatus also contemplates the use of a support for the trays orpanels of peculiar construction which may be adjusted in wind, and thusalter the inclination of the trays, which change, acting in conjunctionwith the impact or jarring mechanism, causes a subpiece or block D, asis usual.

`more fully appear.

stantially complete separation between the Inineral and the angue.

Referring to the drawings, A and B denote the main or supportingtimbers, surmounted by castings or foot-pieces C, each of which isprovided with a vertically-adjustable bearing Mounted upon the blocksare the rocker-plates E, the upper ends of which find their bearings insuitable blocks secured to the two lower longitudinal members F G of thesupporting-frame. Said members are connected together at various pointsthroughout their length by crossbraces H. and are secured to the upperlongitudinal members I J by brackets or arms K. (Best shown in Fig. 2.)Said members I andJ are connected to each other by a series of parallelcross-braces L. 4A pair of oppositelydisposed angle-braces M extend fromthe center of member I to the ends ofthe member J, while a second pairof similarly-disposed braces N are connected to the central brace L ofthe series and extend therefrom to the adjacent braces, being securedthereto at their points of junction with the longitudinal memer J. Thisconstruction secures a flexible table or support and enables the same tobe readily placed in wind to effect an adjustment of the trays or panelsnecessary to the proper separation of the particular grade of materialunder treatment, as will hereinafter Mounted and secured upon the upperface of member F is a flat guide rail or bar O, while member G carries aguide-rail P, preferably of the form shown in Fi 2.

gSecured upon the cross-bars L of the su porting-frame are. threelongitudinally-disposed bars or members Q, R, and S, the members Q and Rbeing provided with flat bearing-plates T, which work against similarplates U, secured upon the lower face of each of the trays or panels V.Member S carries a guide-rail W, the upper faces of which are inclined,(see Figs. 2 and 5,) the long bearing or supporting face thereofstanding at approximately sixty degrees to the vertical, while theshorter or arresting bumping-face is at right angles to the' long face.Rail W passes into a shoe X of complemental form, secured in the underface of a cross-bar Y, one of such bars being attached to the under faceof each of the trays or panels V. To the outer face of each tray orpanel, at the head thereof, is secured a cross-bar Z, carrying anangle-plate IOO IIO

or shoe a of the same form as shoe X and designed, when the traysare'being returned to the feed end of the apparatus, to properly sustainthe same. A flat bar bis secured to the outer face of each panel,adjacent to the discharge end thereof, said bar resting on theguide-rail O as the trays travel along the lower stretch. The trays orpanels, as is usual in machines of this general type, are arranged sideby side, so as to form, in effect, an endless belt. The connection maybe accomplished in any suitable manner so long as suflicienijfiexibility is maintained, and the panels may be moved endwiseindependently of each other to a limited extent. i

In the drawings I have shown two endless sprocket-chains c d, to whichthe opposite ends of the panels are connected, the chains passing aboutsprocket-wheels e f, mounted upon a shaft g, carried by brackets or arms7i, secured to the longitudinal members I and J, and also aboutsprockets L j', mounted upon a shaft 7c, said shaft being likewisesupported by suitable brackets Z. Each panel is provided at its head endwith a block fm, the inner face of the block being preferably curved, asshown in Fig. 8. The bottom of the tray will, by preference, be formedof canvas or linoleum provided with a thin wooden support. Shaft gcarries at its outer end a third sprocket n, a sprocket-chain o passingabout said sprocket and another sprocket p, mounted upon a shaft g.Shaft g is likewise provided with a worm-wheel 1", which meshes with aworm s, secured to a shaft t, the opposite end of the shaft carrying agear u. Gear u meshes with a pinion o, splined to a power crank-shaft w,said shaft working in suitable bearings in a fixed housing or bedMounted within the housing is a yoke or casting y, provided withguide-arms z z, Fig. 2, which work in suitable recesses formed in thehousing. Said yoke is provided with a downwardly-projecting recessed armA',A adapted to receive one end of a heavy coiled spring B', theopposite end of the spring resting in a cup C', which may be adjusted tovary the tension of the spring by an adjusting-screw D. Normally thespring tends to draw the yoke to the right, and with it the support orframe upon which the trays are mounted, the yoke being connected to thelongitudinal side bar J of the frame by a bolt or bar E A pitman F' isswiveled upon the crankshaft w and carries at its lower end bearing-.blocks G G', against which rest links H l',

the second, third, fourth, and fifth pan els is al series of abutments,bumpers, or stops. ln the form illustrated each bumper comprises a blockL', mounted in a horizontally-disposed tube or sleeve M and adjustablelengthwise therein by means of a threaded stem il', whereby the blockmay be protruded to a greater or less extent. Each tube or sleeve M ismounted in a suitable casting O',.all of said castings being securedtogether, as shown, and the structure as a-whole mounted upon verticalcolumns P', so that the blocks L' stand in alinement with the headblocksm of the adjacent panels. Braces Q' serve to sustain the bumpers inproper position against the impact of the panels when they are thrownagainst them by the action of the spring.

The construction of the bumpers may he varied from that shown, and anyform whi ch will insure stability and afford adjustment for wear and forthe purpose of securing a greater or less impact, according to thenature of the material undergoing treatment, may be employed,

rl`he pulp to be treated is fed into the panelsfrom a trough R', whilethe wash-water passes thereto from a trough S'. The material leaving thelower open ends of the panels or trays passes onto a shelf T', thence tothe middling-launder V', or onto a second shelf W', and into thetailing-launder, according to the position ofthe panels or trays.

The operation of the apparatus is as follows: When it is proposed totreat slimes, the table or frame is placed in wind so as to elevate thedischarging end of the trays or panels on the feed end of the table, andthus prevent the slime or pulp from moving directly off of the same.While thus maintained upon the panels, a separation between the mineraland the gangueis effected through the agency of the reciprocatingmovement imparted to the panels and the impact of the panels against thebumpers. with the action of the bumpers against which the panels aremoved quite rapidly, so that each panel .is given a number of jars orlimpacts before it passes from one bumper to the next or out of linewith the last bumper, attention is directed to the operation of thetoggle and spring mechanism hereinbefore described. As will be readilyseen, the velocity of the table at any instant of its reciprocatingstroke is the resultant of two variable forces: First, if the pitmanwere moved from its lowest position upward at a uniform rate themechanical arrangement would cause the table to increase its velocity ateach point of its backward stroke until the end of the stroke isreached; but, second, the pitman travels at a variable rate, which hasits maximum velocity at the point where the ln connection IOC TOS

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i pitman is just half-way between its lowest and highest positions.

The resultant horizontal motion imparted to the table has its greatestvelocity at a vpoint very nea-r the end of the backward stroke. From`this point until the end of the stroke is reached the motion isretarded, until at the end of the stroke the velocity is zero. Obviouslythe motion best adapted to advance the mineral particles upon thetable-surface would be one whose velocity increased continuouslythroughout the stroke and then dropped at once from its maximum velocityto zero. The arrangement of the present apparatus is such that thisresult is accomplished as the panel strikes its bumper just the panelreaches its greatest speed a short distance from the end of the stroke.Suppose the table to be set in motion and the frame adjusted so as togive to the panels an inclination (depending upon the fineness of theore) sufficientto hold a bed of pulp of a depth. best suited to be firststratified and then washed and consider the effect of the table actionon the pulp upon one of these panels as the belt nieves slowly forwardon the frame. The frame and superstructure of panels now begin theirbackward stroke. Panel numbered 2 has been gradually accumulating asufficient load of pulp during some sixty preceding strokes, and if thematerial be very fine the bed of pulp is about one and one-half inchesdeep at the back end of the panel. As the panel starts backward itsvelocity gradually increases until at the greatest speed it comes intocontact with its bumper and is abruptly stopped. The result is that adecided impact is given to each mineral particle, causing it to move uphigher on the panel or against the slowly-moving current of water thatis in the feed. This advance of the mineral particles is more pronouncedupon thoseparticles which are nearest the bottom of the pulp,as it ishere that the current is slightest; but the particles nearest thebottom, because of the action of gravity and because of the settlingreturnblow, hereinafter referred to, are those of the greatest specificgravity. Therefore the heaviest minerals tend to range themselves higherup on the panels. The panels being light and rigid, the full impact orforce of the blow is communicated to every point throughout the panel.This fact and the further fact that each panel is sufficientlyindependent of the others and-of the frame admits of its being suddenlystopped while at its greatest speed, permitting the frame with. theother panels, which are out of line with the bumpers, to pass on,slowing up until the end of the stroke is reached. By thus suddenly arfresting the movement of the panels a rapid separation of the mineral andgangue is effected.

In the use of the apparatus it has been found that the effect of impactor sudden stoppage was so decided that the ordinary settling of themineral particles by gravity was not sufficient to produce the beststrativiication. The necessity for what might be termed a downwardimpact following immediately after the impact referred to above andwhile the mineral particles were freely moving among themselves becameapparent. By the employment of the guiderail W of the form abovedescribed working in connection with the shoes secured upon the underside of the panels this downward impact is provided for. Vhen the panelis brought into contact with the bumper, the parts assume the positionsshown in Fig. 8. and the table with the remaining panels is moved to itsextreme position at the right. Upon reference to said figure it will beseen that the guide-rail W passes partially out from under the shoe, andin so doing the panel is elevated slightly at its upper end. As theframe again starts forward the substantially vertical face of the guiderail comes into contact with the corresponding face of the shoe, theresult being to give a reverse blow or impact to the panel, which servesto throw the mineral particles down toward the bottom of the panel andalso toward the upper or head end of the same, or in the directionindicated by the arrow in Fig. 3. These two reactions produced by thepanel coming into contact with bumper and the settling-blow which iseffected, as just noted, upon the return stroke follow each other soclosely as to be almost simul taneous, but by placing the hand upon thepanel they are both distinctly felt.

In the operation of the app'aratus pulp and wash-water pass from thetroughs R S', sufficient water being provided to give the pulp theproper consistency and the quantity of pulp and water passing onto thetrays or panels being regulated as is usual in machines of this class.The pulp is continuously delivered onto the panels marked l, 2, 3, and 4in Fig. l of the drawings, the panels in the positions marked 2, 3, 4,and 5 constantly receiving the bumping and jarring motions beforedescribed. )onsequently when the pulp reaches the position of panel No.6 it will be completely separated. The mineral and the gangue, owing totheir different specific gravities, aided by the effect of theabove-mentioned moye- -ments, are formed into stratilied layers.

The feed-water that is carried over the end of the panels in thepositions designated l 2, and also on the left-hand half of panel No. 3,is delivered, when so desired, into a return middling launder forfurther treatment. The wash-water, together with the gangue that passesoff at the ends of the panels 4, 5, 6, 7, 8, and Q, and the right-handhalf of panel No. 3, are allowed to go into the tailinglaunder. Thewash-water carrying off the IOO IIO

lightest material from panels 10, 11, 12, and 13 is delivered to themiddling-launder V for another and further treatment, it beingimpossible to deliver a clean concentrate on the panel passing over theend of the table without lsome of the material being washed oil" withthe last of the gangue. Thus to guard against loss from this source theproduct washed ol'f from the panels in the position last named isreturned as a middling with the slime-water for further treatment.

The grade oi the concentrates may be regulated by the amount ofwash-water used, by the inclination of the panels, and by varying theoscillating movement of the table, which latter adjustment is elected byraising or lowering the toggles in the head motion.

It will of course be understood that a suitable receptacle A2, (shown inFig. 7,) will be provided for receiving the concentrates beneath thetable, they being washed o'l'l by a spray passing from a pipe B2 andcaught in the receptacle.

Having thus described my invention, what j I claim is- 1. In anapparatus for treating pulp, slimes and the like, the combination of areceptacle lfor receiving the material; means for imparting areciprocating movement thereto; means independent of the reciprocatingmeans for abruptly stopping the movement of the receptacle in onedirection 5 and means for imparting to the receptacle as it is moved inthe opposite direction a jar of impact in a plane approximately verticalto the longitudinal axis of the receptacle.

2; In an apparatus for treating pulp, slimes and the like, thecombination of a receptacle; means for reciprocating the same; meansindependent of the reciprocating means for suddenly arresting themovement of the receptacle while it is traveling in one direction,whereby the particles of heavy specilic gravity will be thrown towardone end of the receptacle; and means for imparting to the receptacle asit is moved in the opposite direction a jar or impact in a planeapproximately vertical to the longitudinal axis ot the receptacle,whereby the particles which are 'in suspension and in a state ofmovement will be precipitated.

8. In an apparatus for treating pulp, slimes and the like, thecombination of a frame or support 5 means for reciprocating saidsupport, said means moving the 'frame with a gradually-increasing speedfor a portion of its stroke; a receptacle for the slimes mounted uponsaid frame or support and free to be moved independently thereof, meansfor arresting the movement of the receptacle las the reciprocating meansreaches its greatest speed 5 and means interposed between the frame andthe receptacle ior imparting a jar to the receptacle upon the returnmovement of the frame.

4. In an apparatus for treating pulp, slimes and the like, thecombination oi' a irame or support 5 a series of loosely-connected traysor panels mounted upon and movablelengthwise of said support; means forreciprocating the frame and the panels thereon 5 and means for arrestingthe reciprocating movement of one or more of said'panels at the head ofthe apparatus and immediately after the pulp has been introducedtherein, while the frame continues its sidewise movement, substantiallyas described.

5. In an apparatus for treating pulp, shines and the like, thecombination of a frame or support; a series of lexibly-connected traysor panels mounted and movable lengthwise of said frame or support; means'for reciprocating said frame 5 means for traversing the trays or panelsalong said frame or support5 means for feeding the pulp and the likeinto the trays at the forward end of the frame; and a series of bumpersarranged at the forward end oi' the frame and standing in line with andadapted to act upon those trays only which have just received theircharge of pulp.

6. In an apparatus for treating pulp, slimes and the like, thecombination of a trame or support 5 a series of trays or panels.

mounted thereon; flexible connections intermediate said trays or panels5means for traversing the trays or panels along the frame or support;means `for reciprocating said frame or support; means for feeding thepulp and the like tothe trays at the forward end of the lrame 5 and aseries of adjustable bumpers arranged at the forward end of the frameand standing in line with and adapted to act upon those trays only whichhave just received their charge of pulp, substantially as described.

7. In an apparatus for treating pulp, slimes and the like, thecombination of a frame or support 5 a series of trays or panels mountedthereon; flexible connections intermediate said trays or panels5 meansfor traversing the trays or panels along and beneath said support; meansfor reciprocating said support; a series of bumpers standing in linewith the panels at the forward end of the apparatus 5 and meansinterposed between said trame and trays for imparting a ar to the panelsacted upon by the bumpers as the frame is moved away from the bumpers.

8. In an apparatus for treating pulp, slimes and the like, thecombination of a frame or support; a series of trays or panels mountedthereon 5 flexible connections intermediate said trays or panels 5 meansfor traversing said trays along the upper face of the frame 5 means forimparting a sidewise reciprocatory movement to said frame and the IOOIIO

ses, 058

panels carried thereby; a series of bumpers standing in line with theendsy of the trays at the forward portion of the apparatus; and aguide-rail mounted upon the, upper portion of the frame, said rail beingprovided with an inclined bearing-face upon which the trays may ridewhen they come into contact with the bumpers, and likewise provided witha face adapted to impart a jar to the trays as the frame is movedoutwardly or away from the bumpers, substantially as described.

9. In an apparatus for treating pulp, slimes and the like, thecombination of a frame or support; a guide-rail mounted upon the upperface thereof, said rail being provided with an inclined bearing-face andwith 'a face standing at substantially right angles thereto; a series oftrays or panels, each of which is provided upon its under face with ashoe complemental in form to the rail and upon which said shoes rest;means for imparting a sidewise movement to the frame; a series ofbumpers standing in line with the ends of the trays; and means formoving said trays along the frame or support.

10. In an apparatus for treating pulp, slimes and the like, thecombination of a frame or support; a guide-rail mounted thereon, saidrail being provided with an inclined bearing-face and with a facestanding at substantially right angles thereto; bearing-plates alsomounted uponthe frame and extending lengthwise thereof; a series offlexibly-connected trays, each of which is provided with a shoecomplemental in form to the guide-rail; bearing-plates mounted upon theunder face of the trays in line with the bearing-plates carried bytheframe; means for advancing the trays along the frame or support; aseries ofbumpers standing in line with the ends of the trays at theforward portion of the apparatus; and means for imparting sidewisemovement to the frame.

11. In an apparatus for treating pulp, slimes and the like, thecombination of a flexible frame or support; means for placing said frameor support in wind; a series of flexibly-connected trays mounted andmovable upon said frame; a series of bumpers standing in line with thetrays at the forward end of the apparatus; and means for impartingreciprocatory movement to said frame.

12. In an apparatus for treating pulp, slimes and the like, thecombination of a suitable frame comprising longitudinallyextendingmembers, cross-connecting members, and angularly-disposed bracesextending from the center of one side of the frame to the outer portionsof the longitudinal member upon the other side of theframe, whereby oneside of the frame is made substantially rigid while the other may beplaced in wind; means for adjusting said frame to place it in wind aseries of trays mounted upon and movable along said frame; iiexibleconnections intermediate said trays; a series of bumpers located inlinewith the ends of the trays adjacent to the forward portion of theapparatus; means for imparting a sidewise reciprocatory movement to saidframe; and means for imparting a jar to the trays which have been actedupon by the bumpers as said frame'moves away fromthe bumpers,substantially as described. y

13. In an apparatus for treating pulp, slimes and the like, thecombination of a suitable frame or support; a series of trays or panelsmounted and movable lengthwise thereon; flexible connectionsintermediate said panels; means for feeding pulp and the like into thetrays at the forward end of the apparatus; aseries of bumpers standingin line with the ends of the panels at the forward end of the apparatus;means interposed between the frame and the trays for imparting a jar tothe trays as the frame is moved away from the bumpers; a yoke connectedto the frame at one side thereof; a toggle working in conjunction withsaid yoke to move the frame away from the bumpers; and a spring actingupon the yoke to move the same in opposition to the movement of thetoggle, substantially as described.

14. In an apparatus for treating pulp7 slimes and the like, thecombination of a suitable frame; a guide-rail mounted thereon, said railbeing provided with an inclined bearing-face and with a second facestanding at approximately right angles thereto; a series of traysmounted upon and movable lengthwise of 'said frame, each of said traysbeing provided with a shoe complemental in form to said rail and uponwhich it normally rests; a series of bumpers standing in line with theends of the trays at the forward portion of the apparatus; a yokeconnected to the frame; a toggle working in conjunction with the yokeand serving when straightened to force the frame away from the bumpers;and a spring acting in opposition to the toggle mechanism and serving toforce the yoke in the opposite direction, substantially as described.

15. In an ap aratus for treating pulp, slimes and the like, thecombination of a frame composed of two pairs of longitudinally-extendingbars; brackets connecting said bars; cross-braces connecting the lowerpair of bars; a series of parallel braces connecting the upperlongitudinal bars; a pair of angularly-disposed braces extending fromthe center of the outer upper longitudinal bar to the ends of theopposite upper bar; a second pair of angular -disposed braces connectedto and extending from the central cross-brace of the upper parallelseries to the longitudinal bar to which the separated ends of the firstpair of angularly-disposed braces are connected; means for adjustablysup- TOO IOS

porting said frame; means for imparting a sidewise reciprocatorymovement to said frame a series of flexibly-connected panels mountedupon said frame; means for traversing said panels along said frame; aseries of bumpers standing in line with the ends of the panels at theforward portion of the apparatus; and means for imparting a ar to thepanels acted upon by the bumpers as the frame is moved away from thebumpers.

16. In an apparatus for treating pulp, slimes and the like, thecombination of a frame or support; a series of trays or panels mountedthereon; flexible connections between said trays or panels; means fortraversing the trays or panels along the frame or support; means forreciprocating' said frame or support, said means moving with agradually-increasing speed for a part of its stroke; means for feedingthe pulp and the like to the trays at the forward end of the frame meansstanding in line with those panels which have just received their chargeof pulp and arranged to arrest 'lthe same as the frame-re- 17. In anapparatus for treating pulp,

slimes and the like, the combination of a :Hexible frame or support;means for placing said frame or support in wind; a series offlexibly-connected trays mounted and movable upon said frame; a seriesof bumpers standing in line with the trays at the forward end of theapparatus; means for imparting a settling jar to all of the trays asthey are moved away from the bumpers, and means for impartingreciprocatory movement to said frame.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

FREDERIC WOOSTER SHERMAN.

Witnesses:

JEROME PAXTON, B. L. CRIPPS. y r

